Killer on the Loose!
(Published on 3. January 2026, 19:58 by isajo4002)
This 9 part story is a collaboration between the following puzzle setters:
• Isamook
• pjotrV
• Andrewsarchus
• Chefofdeath
• yttrio
• calvinball
• sujoyku
Also check out pjotrV's YouTube channel for more puzzle content!
Opening up SudokuPad links out of order may include spoilers, but this page will be spoiler free.
You are a detective at a party of 11 and there has been a murder.
You lock the doors to trap everyone inside to figure out who the killer is.
I wonder who was killed...
Chapter 1
by Isamook and pjotrV
• Pick 9 digits from 0-9 and place a digit in each cell so no digit repeats in any row, column, or bolded region.
• Digits in a cage may not repeat and must sum to the number given.
Chapter 2
by Isamook and pjotrV
• Choose 8 of the remaining digits and place a digit in each cell so no digit repeats in any row, column, or bolded region.
• Digits along an indicated diagonal sum to the number given. Digits may repeat along these diagonals if allowed by other rules.
Chapter 3
by Isamook and pjotrV
• Choose 7 of the remaining digits and place a digit in each cell so no digit repeats in any row, column, or bolded region.
• Digits along an arrow sum to the digit in its respective circle.
Chapter 4
by Andrewsarchus
• Choose 6 of the remaining digits and place a digit in each cell so no digit repeats in any row, column, or bolded region.
• Digits along a line have the same sum as the sum of digits in its respective circles.
Chapter 5
by Chefofdeath
• Choose 5 of the remaining digits and place a digit in each cell so no digit repeats in any row, column, or bolded region.
• Digits along a line connecting two diamonds must not be between the two numbers in the diamonds. These two diamonds must differ by at least 5.
Chapter 6
by yttrio
• Choose 4 of the remaining digits and place a digit in each cell so no digit repeats in any row, column, or bolded region.
• X-Sums clues outside the grid gives the sum of the first N digits in that row or column, where N is the digit in the cell closest to the given clue.
• The integer value 'x' is the same for every clue, and it must be determined by the solver.
Chapter 7
by calvinball
• Choose 3 of the remaining digits and place a digit in each cell so no digit repeats in any row or column.
• All cages must have distinct sums and all of those sums must have the same remainder when divided by 3.
• Cells with arrows pointing inward must be smaller than all orthogonal neighbors.
Chapter 8
by Andrewsarchus
• Choose 2 of the remaining digits and place a digit in each cell so no digit repeats in any row or column.
• The correct digits will match the seven-segment display in each cell. The individual filaments are numbered 1 through 28.
• The correct solution has filament X turned off, and the sum of the filaments that are turned on in the entire grid is X^3.
• X must be determined by the solver.
Chapter 9
by Isamook
• You wake up to continue your investigation, but of the two remaining digits, you have found the odd one dead.
• This must mean... you know the killer! But they are nowhere to be found. Catch the killer by placing them in the last cell.
Solution code: Input the killed digits in the order they were killed, followed by the killer
Comments
on 2. July 2026, 21:10 by wisty
Really fun and wild set of puzzles! Very very hard at times but definitely worthwhile if it seems like your thing. Also, it must have taken a lot of work setting up the LMD page! Whoever formatted everything did a great job!
on 2. July 2026, 20:56 by isajo4002
Images, full rulesets, and HTML formatting done by Wisteria.
on 12. February 2026, 09:58 by bodemeister
Fantastic idea and well executed by all the collaborators!
on 16. January 2026, 09:06 by Nebuzaradan
Fun concept and nice puzzles (plus some wacky ones at the end)
on 3. January 2026, 20:03 by isajo4002
For those who are wondering this would not have been put together if it weren't for sujoyku. He is the one who helped me put all the puzzles together
